package com.atguigu.gulimall.seckill.interceptor;

import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.vo.MemberRespVo;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component //加到容器中
public class LoginUserInterceptor implements HandlerInterceptor {

    public static ThreadLocal<MemberRespVo> loginUser = new ThreadLocal<>();
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String uri = request.getRequestURI();

        //  /order/order/status/{orderSn}
        AntPathMatcher antPathMatcher = new AntPathMatcher();
        boolean match = antPathMatcher.match("/kill", uri);

        //如果是秒杀请求，拦截请求 是否登录 服务器端的请求拦截
        if(match){
            MemberRespVo attribute = (MemberRespVo) request.getSession().getAttribute(AuthServerConstant.LOGIN_USER);
            if(attribute != null){
                //用户已登录
                //将已登录的用户放到ThreadLocal中，方便其他的线程都能访问
                loginUser.set(attribute);
                return true;
            }else{
                //没登录就去登录
                request.getSession().setAttribute("msg","请先进行登录!");
                response.sendRedirect("http://auth.gulimall.com/login.html");
                return false;
            }
        }

        return true;
    }
}
